Post by divingwolf on Dec 29, 2012 16:48:47 GMT -9
This graph shows the allometric relationships between average potential longevity and body length in several mammalian families.
The data were collected in zoos. Body lengths do not include the tails of the animals.
For Ursidae, the allometric constant is 0.73. There are seven species of Ursidae in the graph.
Let y = average potential longevity of a species.
Let x = body length
Then the trend line is y = bx^k, where k = 0.73 for Ursidae.
The graph plots ln(x) and ln(y), so the relationship becomes
ln(y) = ln(b) + kln(x), a straight line with slope k.
Unfortunately, the original data are not given, and it isn't clear where they are taken from.
To put this in the simplest terms, species with greater body length live longest. The relationship isn't linear, but a exponential.
Source: On Evolution and Fossil Mammals, by Björn Kurtén.
The data were collected in zoos. Body lengths do not include the tails of the animals.
For Ursidae, the allometric constant is 0.73. There are seven species of Ursidae in the graph.
Let y = average potential longevity of a species.
Let x = body length
Then the trend line is y = bx^k, where k = 0.73 for Ursidae.
The graph plots ln(x) and ln(y), so the relationship becomes
ln(y) = ln(b) + kln(x), a straight line with slope k.
Unfortunately, the original data are not given, and it isn't clear where they are taken from.
To put this in the simplest terms, species with greater body length live longest. The relationship isn't linear, but a exponential.
Source: On Evolution and Fossil Mammals, by Björn Kurtén.
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